Question

Soak some juliennes of ginger in vinegar, in a small jar. Salt may be added for taste.
Did the ginger slices get spoilt even after a week or a fortnight?
Soak a slice of ginger in water. Salt may be added for taste.

Did the ginger slice get spoilt?
Taste a drop of vinegar. Is it sour? Acids are sour to taste.
Can you decipher why the ginger juliennes did not get spoilt in vinegar?


c. Keep half a cup of milk in the kitchen for about 5-6 hours.
What do you observe?

Does the milk kept in the refrigerator get spoilt?

Can you analyse the reason behind the difference in the two observations?

Answer 1

Answer:

vinegar acts like a prevative that's don't spoil anything .

I hope this helps you .

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Answer 2

Answer:

a) No, the slices of the ginger were not spoiled in vinegar.

b) Yes, after a few days, it's not staying the same as before.

c) Yes, vinegar has acetic acid; therefore, the taste of vinegar is sour.

d) Due to the preserving nature of vinegar, Ginger juliennes was not spoiled in vinegar. The vinegar's acetic acid is too acidic to develop poor bacteria in it, which is why vinegar keeps the ginger as it is. The acetic acid in vinegar is 5-10 percent present. People use vinegar to maintain them as fresh. This preservation method is known as Pickling.